Analysts at Goldman Sachs upgraded CIENA (NYSE: CIEN) from Neutral to Buy. The target price for CIENA is set to $26. CIENA's shares closed at $18.51 yesterday.

Analysts at Evercore Partners upgraded TripAdvisor (NASDAQ: TRIP) from Underweight to Equal-weight. The target price for TripAdvisor has been raised from $85 to $110. TripAdvisor's shares closed at $98.29 yesterday.

Morgan Stanley upgraded SanDisk (NASDAQ: SNDK) from Equal-weight to Overweight. The target price for SanDisk has been raised from $100 to $115. SanDisk's shares closed at $96.23 yesterday.